How to start SSH in Linux?

2 years ago
Liam
2 minutes

To start the SSH service on Linux, you can follow these steps:

  1. Check if SSH is installed: Run the following command to check if SSH is already installed on your system.
  2. verbose mode for ssh
  3. If SSH is already installed, you will see the relevant version information. If SSH is not installed, you can use the following command to install it:
  4. For Debian/Ubuntu systems: use the command “sudo apt-get install openssh-server” to install the OpenSSH server.
  5. For CentOS/Fedora systems: use sudo yum install openssh-server.
  6. Start the SSH service by running the following command.
  7. For Debian/Ubuntu systems: start the ssh service with the sudo service ssh start command.
  8. For CentOS/Fedora systems: use the command “sudo systemctl start sshd” to start the SSH service.
  9. Check if the SSH service has been started: Run the following command to verify if the SSH service has been successfully started.
  10. Check the status of the SSH service.
  11. Or Alternatively
  12. Please show me the status of the SSH daemon using systemctl.
  13. If the SSH service has been started, you will see the relevant status information.

You should now be able to connect to your Linux system via an SSH client. Make sure you have opened the SSH port (default port 22) on your firewall for remote access. If you are using a built-in firewall in a Linux distribution (such as iptables or firewalld), you can use the following command to open the SSH port:

  1. For Debian/Ubuntu systems: sudo ufw allow ssh.
  2. For CentOS/Fedora systems: use the following command to add the SSH service to the firewall settings permanently:
    sudo firewall-cmd –permanent –add-service=ssh
    Then, reload the firewall configurations with:
    sudo firewall-cmd –reload
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